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P (continued)

pthread_sigmask(3)examine and change mask of blocked signals✨
pthread_sigqueue(3)queue a signal and data to a thread✨
pthread_spin_destroy(3)initialize or destroy a spin lock✨
pthread_spin_init(3)initialize or destroy a spin lock✨
pthread_spin_lock(3)lock and unlock a spin lock✨
pthread_spin_trylock(3)lock and unlock a spin lock✨
pthread_spin_unlock(3)lock and unlock a spin lock✨
pthread_testcancel(3)request delivery of any pending cancelation request✨
pthread_timedjoin_np(3)try to join with a terminated thread✨
pthread_tryjoin_np(3)try to join with a terminated thread✨
pthread_yield(3)yield the processor✨
ptrace(2)process trace✨
ptrdiff_t(3type)count of elements or array index✨
ptsname(3)get the name of the slave pseudoterminal✨
ptsname_r(3)get the name of the slave pseudoterminal✨
putc(3)output of characters and strings✨
putc_unlocked(3)nonlocking stdio functions✨
putchar(3)output of characters and strings✨
putchar_unlocked(3)nonlocking stdio functions✨
putenv(3)change or add an environment variable✨
putgrent(3)write a group database entry to a file✨
putmsg(2)unimplemented system calls✨
putpmsg(2)unimplemented system calls✨
putpwent(3)write a password file entry✨
puts(3)output of characters and strings✨
putspent(3)get shadow password file entry✨
pututline(3)access utmp file entries✨
pututxline(3)access utmp file entries✨
putw(3)input and output of words (ints)✨
putwc(3)write a wide character to a FILE stream✨
putwc_unlocked(3)nonlocking stdio functions✨
putwchar(3)write a wide character to standard output✨
putwchar_unlocked(3)nonlocking stdio functions✨
pvalloc(3)page-sized page-aligned memory allocation✨
pwrite(2)read from or write to a file descriptor at a given offset✨
pwrite64(2)read from or write to a file descriptor at a given offset✨
pwritev(2)read or write data into multiple buffers✨
pwritev2(2)read or write data into multiple buffers✨

Q

Q_GETFMT(2const)get quota format✨
Q_GETINFO(2const)get information about quotafile.✨
Q_GETNEXTQUOTA(2const)get disk quota limits and current usage for next user or group✨
Q_GETQUOTA(2const)get disk quota limits and current usage for user or group✨
Q_GETSTATS(2const)get statistics about the quota subsystem✨
Q_QUOTAOFF(2const)turn off quotas for a filesystem✨
Q_QUOTAON(2const)turn on quotas for a filesystem✨
Q_SETINFO(2const)set information about quotafile✨
Q_SETQUOTA(2const)set quota information for user or group✨
Q_SYNC(2const)synchronize on-disk copy of quota usages✨
Q_XGETNEXTQUOTA(2const)get disk quota limits for next user or group for an XFS filesystem✨
Q_XGETQSTAT(2const)get XFS-specific quota information✨
Q_XGETQSTATV(2const)get XFS-specific quota information✨
Q_XGETQUOTA(2const)get quota limits for an XFS filesystem✨
Q_XQUOTAOFF(2const)turn off quotas for an XFS filesystem✨
Q_XQUOTAON(2const)turn on quotas for an XFS filesystem✨
Q_XQUOTARM(2const)free disk space taken by disk quotas✨
Q_XQUOTASYNC(2const)no-op✨
Q_XSETQLIM(2const)set quota limits✨
qecvt(3)convert a floating-point number to a string✨
qecvt_r(3)convert a floating-point number to a string✨
qfcvt(3)convert a floating-point number to a string✨
qfcvt_r(3)convert a floating-point number to a string✨
qgcvt(3)convert a floating-point number to a string✨
qsort(3)sort an array✨
qsort_r(3)sort an array✨
query_module(2)query the kernel for various bits pertaining to modules✨
quotactl(2)manipulate disk quotas✨
quotactl_fd(2)manipulate disk quotas✨

R

raise(3)send a signal to the caller✨
rand(3)pseudo-random number generator✨
rand_r(3)pseudo-random number generator✨
random(3)random number generator✨
random_r(3)reentrant random number generator✨
rawmemchr(3)memory raw search character✨
rcmd(3)routines for returning a stream to a remote command✨
rcmd_af(3)routines for returning a stream to a remote command✨
re_comp(3)BSD regex functions✨
re_exec(3)BSD regex functions✨
read(2)read from a file descriptor✨
readahead(2)initiate file readahead into page cache✨
readdir(2)read directory entry✨
readdir(3)read a directory✨
readdir_r(3)read a directory✨
readlink(2)read value of a symbolic link✨
readlinkat(2)read value of a symbolic link✨
readv(2)read or write data into multiple buffers✨
realloc(3)allocate and free dynamic memory✨
reallocarray(3)allocate and free dynamic memory✨
realpath(3)return the canonicalized absolute pathname✨
reboot(2)reboot or enable/disable Ctrl-Alt-Del✨
recno(3)record number database access method✨
recv(2)receive a message from a socket✨
recvfrom(2)receive a message from a socket✨
recvmmsg(2)receive multiple messages on a socket✨
recvmsg(2)receive a message from a socket✨
regcomp(3)POSIX regex functions✨
regerror(3)POSIX regex functions✨
regex(3)POSIX regex functions✨
regex_t(3type)POSIX regex functions✨
regexec(3)POSIX regex functions✨
regfree(3)POSIX regex functions✨
register_printf_modifier(3)define custom behavior for printf-like functions✨
register_printf_specifier(3)define custom behavior for printf-like functions✨
register_printf_type(3)define custom behavior for printf-like functions✨
registerrpc(3)library routines for remote procedure calls✨
regmatch_t(3type)POSIX regex functions✨
regoff_t(3type)POSIX regex functions✨
remainder(3)floating-point remainder function✨
remainderf(3)floating-point remainder function✨
remainderl(3)floating-point remainder function✨
remap_file_pages(2)create a nonlinear file mapping✨
remove(3)remove a file or directory✨
removexattr(2)remove an extended attribute✨
remque(3)insert/remove an item from a queue✨
remquo(3)remainder and part of quotient✨
remquof(3)remainder and part of quotient✨
remquol(3)remainder and part of quotient✨
rename(2)change the name or location of a file✨
renameat(2)change the name or location of a file✨
renameat2(2)change the name or location of a file✨
request_key(2)request a key from the kernel's key management facility✨
res_init(3)resolver routines✨
res_mkquery(3)resolver routines✨
res_nclose(3)resolver routines✨
res_ninit(3)resolver routines✨
res_nmkquery(3)resolver routines✨
res_nquery(3)resolver routines✨
res_nquerydomain(3)resolver routines✨
res_nsearch(3)resolver routines✨
res_nsend(3)resolver routines✨
res_query(3)resolver routines✨
res_querydomain(3)resolver routines✨
res_search(3)resolver routines✨
res_send(3)resolver routines✨
resolver(3)resolver routines✨
restart_syscall(2)restart a system call after interruption by a stop signal✨
rewind(3)reposition a stream✨
rewinddir(3)reset directory stream✨
rexec(3)return stream to a remote command✨
rexec_af(3)return stream to a remote command✨
rindex(3)string search character✨
rint(3)round to nearest integer✨
rintf(3)round to nearest integer✨
rintl(3)round to nearest integer✨
riscv_flush_icache(2)Flush icaches on RISC-V✨
rlim_t(3type)get/set resource limits✨
rlimit(3type)get/set resource limits✨
rmdir(2)delete a directory✨
round(3)round to nearest integer, away from zero✨
roundf(3)round to nearest integer, away from zero✨
roundl(3)round to nearest integer, away from zero✨
roundup(3)round up in steps✨
rpc(3)library routines for remote procedure calls✨
rpmatch(3)determine if the answer to a question is affirmative or negative✨
rresvport(3)routines for returning a stream to a remote command✨
rresvport_af(3)routines for returning a stream to a remote command✨
rt_sigaction(2)examine and change a signal action✨
rt_sigpending(2)examine pending signals✨
rt_sigprocmask(2)examine and change blocked signals✨
rt_sigqueueinfo(2)queue a signal and data✨
rt_sigreturn(2)return from signal handler and cleanup stack frame✨
rt_sigsuspend(2)wait for a signal✨
rt_sigtimedwait(2)synchronously wait for queued signals✨
rt_tgsigqueueinfo(2)queue a signal and data✨
rtime(3)get time from a remote machine✨
rtnetlink(3)macros to manipulate rtnetlink messages✨
ruserok(3)routines for returning a stream to a remote command✨
ruserok_af(3)routines for returning a stream to a remote command✨

S

s390_guarded_storage(2)operations with z/Architecture guarded storage facility✨
s390_pci_mmio_read(2)transfer data to/from PCI MMIO memory page✨
s390_pci_mmio_write(2)transfer data to/from PCI MMIO memory page✨
s390_runtime_instr(2)enable/disable s390 CPU run-time instrumentation✨
s390_sthyi(2)emulate STHYI instruction✨
sa_family_t(3type)socket address✨
sbrk(2)change data segment size✨
scalb(3)scale by an integer power of radix (OBSOLETE)✨
scalbf(3)scale by an integer power of radix (OBSOLETE)✨
scalbl(3)scale by an integer power of radix (OBSOLETE)✨
scalbln(3)scale by an integer power of radix✨
scalblnf(3)scale by an integer power of radix✨
scalblnl(3)scale by an integer power of radix✨
scalbn(3)scale by an integer power of radix✨
scalbnf(3)scale by an integer power of radix✨
scalbnl(3)scale by an integer power of radix✨
scandir(3)scan a directory for matching entries✨
scandirat(3)scan a directory for matching entries✨
scanf(3)input FILE format conversion✨
sched_get_priority_max(2)get static priority range✨
sched_get_priority_min(2)get static priority range✨
sched_getaffinity(2)set and get a thread's CPU affinity mask✨
sched_getattr(2)set and get scheduling policy and attributes✨
sched_getcpu(3)determine CPU on which the calling thread is running✨
sched_getparam(2)set and get scheduling parameters✨
sched_getscheduler(2)set and get scheduling policy/parameters✨
sched_rr_get_interval(2)get the SCHED_RR interval for the named process✨
sched_setaffinity(2)set and get a thread's CPU affinity mask✨
sched_setattr(2)set and get scheduling policy and attributes✨
sched_setparam(2)set and get scheduling parameters✨
sched_setscheduler(2)set and get scheduling policy/parameters✨
sched_yield(2)yield the processor✨
seccomp(2)operate on Secure Computing state of the process✨